Flipper Zero 5V max current on battery?
Hi, I currently working on a PM2.5 air quality sensor using SDS011 PM sensor. I already have the sensor wired to the correct GPIO pins on Flipper. It kinda works.
The issue is the sensor only works if the 5V power supplied through USB. On battery, the sensor will fail to startup and the 5V pin will go to protection mode (no voltage output).
I've checked the code and it is enabling the 5V pin correctly whether it is on battery or plugged in, I can see 5V on my multimeter if there's no sensor connected. But as soon as I connect the sensor power pins, the 5V pin will go zero volts (and the sensor makes very faint ticking noise, like it was trying to spin the small fan inside it but fails to do so).
The sensor datasheet says that it will be drawing a max of ~100mA during startup and ~70mA when measuring/standby. Flipper datasheet tells us that the 5V should be able to provide 1200mA of current, but it doesn't tell us whether it is on battery or USB power?
Does anyone (or the official devs) knows what is the max 5V current draw capacity while on battery?